NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

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Oxygen is paramagnetic. The unpaired electrons are present in :

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Correct option: A

Antibonding orbitals

Option A (Antibonding orbitals) is correct. Oxygen's paramagnetism arises from the presence of unpaired electrons in its antibonding molecular orbitals.

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The source of most of the noble gases is: Which possesses least stable covalent P-H bond? Which gas is filled in electric bulbs/tubes? The correct order of the oxidation states of nitrogen in

NO,\,N{O_2},\,N{O_2}

and

{N_2}{O_3}

is Which of the following is not an acidic oxide? On heating with

\mathrm{NaOH}

solution and zinc,

\mathrm{NaNO}_3

liberates a gas which can also be obtained by: